Fathimahhayati LD, Pawitra TA, Tambunan W, Hartono M. Working posture analysis on oyster mushroom farmers using OWAS method in Lempake, Samarinda, East Kalimantan. J. Ilm. Pertan. 2021;18(1):1-11. doi:10.31849/jip.v18i1.7197